Gas-stove.



No. 754,180. PATENTED MAR. s, 1904.

' A. G..WITMAN.

GAS sToVE.

APPLICATION FILED AUG. 261903. A

no MODEL.

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UNITED STATES Patented March 8, 1904.

ARTHUR O. VITMAN, OF COLUMBUS, OHIO.

GAS-STOVE.

SPECIFICATION forming part of yLetters Patent No. 754,180, dated March8, 1904.

Application filed August 26, 1903. Serial No. 170,850. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR O.W1TMAN, a citizen of the United States,residing at Columbus, in the county of Franklin and State of Ohio, haveinvented a certain new and useful Improvement in Gas-Stoves, of whichthe following is a specification.

This invention relates to gas-stoves, and is particularly designed toprovide an improved burner and back to be incased within a suitablestove-body or within a fireplace. It is furthermore designed to providean exceedingly simple construction for convenience in setting up andtaking apart the stove, while at the same time insuring an effectivecombustion of the gas to secure the maximum heating eiect.

With these and other objects in view the present invention consists inthe combinationl and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings, and particularlypoint-A ed out in the appended claims, it being understood that changesin the form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawings, Figure 1 is a perspective view of a burner andiireba'ck embodying the features of the present invention. Fig. 2 is avertical sectional View thereof. Fig. 3 is a cross-sectional view on theline 3 3 of Fig. 2. Fig. 4 is a detail perspective view of one of theend plates for the expansion chamber. Fig. 5 is a detail view of themixer.

Like characters of reference designate corresponding parts in each andevery figure of the drawings.

In ycarrying out the present invention it is designed to have the devicemade up of few parts, and therefore it has been found convenient toemploy sheet metal for the greater part of the device; but it will ofcourse be understood that it is not desired to limit the invention tothis material, as the parts hereinafter described as formed of sheetmetal may be cast without altering the construction of the device oraifecting the invention in any manner whatsoever.l

tom 3 of thel chamber, the back 4, and the top 5. The bottom isprojected somewhat in front of the top 5, is then bentl upwardly to forma front 6, and thence rearwardly to form a burner-plate 7, which ispierced throughout Yits area by perforations 8, through which the gas isadapted to escape in the form of flames. It will here be noted that thefront 6 is about one-third of the height of the back 4, and theextension 2 of the chamber is embraced between the burner-plate 7 thefront 6, and the adjacent portion of. the bottom 3. From the front edgeof the top 5 the plate is extended upwardly to form the lireback 9, thetop edge of which is cut away intermediately for a considerable extent,as indicated at 10, to permit the products of combustion to pass overthe top of the back. The opposite ends of the back 9 are bent to formwings or flanges 11, projected in front of the back and lying above theeXpansion-chamber. The open front portion of the expansion-chamberbetween the topl of said chamber and the burner-plate 7 is closed bymeans of a plate 12, the upper edge of which overlaps the fireback 9 andis connected thereto by means of suitable fastenings 13-as, forinstance, rivets. For connecting the iireback member 12 to theburner-plate 7 the rear edge of the burner-plate is bent upwardly toform a flange 14, and the plate 12 rests upon the plate 7 and againstthe flange 14, to which it is connected by means of rivets or othersuitable fastenings 15. From theforegoing Adescription it will be' notedthat with the exception of the plate 12 all of the hereinbeforedescribed parts are formed from a single sheet of metal, and it will nowbe understood that these parts may be cast as well as bent from ametallic sheet without affecting the invention in any manner whatsoever.

For closing the ends of the expansion-chamber opposite plates or endpieces 16 are em- IOO ployed, and as these plates are duplicates inconstruction and arrangement a description of one of the plates isdeemed sufficient. Each of these plates is substantially L-shaped orprovided with a front base extension 17, so as to correspond with thecross-sectional shape of the expansion-chamber. Upon the inner face ofthe end plate there is a marginal flange 18, which extends entirelyaround the plate at a predetermined distance inwardly from the edgethereof so as to engage the inner sides of the top 5, back A, bottom 3,front 6, burner-plate 7, and the freback-plate 12, so as to preventedgewise displacement of the end plate and at the same time brace andstiffen the expansion-chamber. By reference more particularly to Figs. 1and 2 it will be seen that the front edge portion of the end plate abovethe part 17, as indicated at 19, projects in front of the freback to thesame extent as do the lianges 11 of said fireback, so as to partiallyinclose the space immediately in front of the firebaeh for the purposeof confining' the flames therein. The opposite end plates 16 areconnected by a tie-rod 20, the head of which is countersunk within asocket 21, Aprojected at the inner side of one of the plates, while itsopposite end is pro-' vided with a nut let into a socket 22 in the otherplate, whereby the end plates are held in position without theemployment of other fastenings. Each end plate is furthermore providedwith a lug, ear, or projection 23 upon the part 19 of the plate anddesigned to lie against the front of the lower lireback member 12 so asto embrace the latter between the ear and the adjacent portion of theflange 18 on the end plate.

Gas is admitted to the expansion-chamber through an elbow 24, whichpierces the back of the chamber, near the top thereof, there being asuitable service-pipe 25 connected to the elbow and also connected to asuitable source of supply. (Not shown.)

For mixing the required amount of air with the gas the two service-pipesections which are next to the elbow 24 are joined by a coupling 26,having a longitudinal opening 27 in each side and provided withset-screws 28 for engagement with the respective pipe-sections to holdthe coupling or mixer against acci* dental displacement. It will ofcourse be understood that the pipe-sections 25 are separated by asuitable interspace, with which the openings 27 of the mixer communicateand through which air is drawn inwardly by the flow of gas, whereby therequired mixture is admitted to the upper portion of theexpansion-chamber. `The advantage of the elbow 24; is that it may beturned for connection with a service-pipe Without respect to therelation of the latter.

Ithas not been deemed necessary to show the device of the presentinvention fitted within a stove-casing', as the construction andoperation of the device will be clearly understood without suchillustration. In this connection it will of course be understood thatthe ears 29 at the top of the fireback 9 are designed for connectionwith the top of a stove-casing', whereby the opening 10 forms an exitfor the passage of the products of combustion to the flue of the casing.Moreover, the fianges 11 and 19 are also employed in connecting thedevice to the sides of the stove.

When the present form of stove is in use, the gas and air enter theupper portion of the expansion chamber, and in passing' downwardly andforwardly to the perforations of the burner-plate the mixture becomesheated and expanded to the proper degree for the most effectivecombustion at the burner-plate 7, as the front portion 12 of the chamberis maintained in a highly-heated condition by the flames issuing throughthe perforations of the burner-plate.

While not shown, I contemplate facing the fireback members 9 and l2 withasbestos in the usual manner.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, isM

1. A gas-stove embodying an expansionchamber having a fuel-inlet, andprovided with a base extension, the top of which is provided withburner-openings and has at its rear end an upstanding flange, the frontof the chamber between the fiange and the top thereof being open, anintegral `fireback member rising from the front of the top of thechamber, and a lower fireback member closing the open front of theexpansion-chamber and connected at its upper end to the upper firebackmember and at its lower end to theflange on the eX- tension of thechamber.

2. A gas-stove embodying' an expansionchamber having a base extension,the top of such extension having openings to constitute a burner-plate,a fireback rising from the front of the top of the chamber, end platesapplied to opposite ends of the chamber, and a removable tie-rodextending through the chamber and piercing the respective end plates.

3. A gas-stove embodying an expansionchamber having a base extension,the top of the extension having openings to constitute a burner-plate, afireback rising from the front of the top of the chamber, end platesapplied to opposite ends of the chamber to close the same and providedwith marginal flanges fitting the ends of the chamber, and a removabletie-rod lying within the chamber and piercing the end plates.

4L. A gas-stove embodying an expansionchamber having a base extension,the upper front portion of the chamber between the extension and the topbeing open, the top of the extension having openings tol constitute aburner-plate, a lower fireback member clos- IOO IOS

IIO

ing the open front portion of the chamber jected infront of the chamberabove the between the burner-plate and the top of said burner-plate, andatie-rod Within the chamber chamber, an upper rebaek member risingandpiereng the end plates.

from the front of the top of the chamber and ARTHUR C. WITMAN. 5provided at opposite Sides With forwardly-d In presence ofrectedflanges, end plates applied to and clos- A. L. PHELPS,

ing Iche ends of the chamber and also pro- C. C. SHEPHERD.

